基于Spring+SpringMVC+MyBatis实现高并发秒杀API
项目地址：https://github.com/DaleyChao/SecondKill 项目下载链接：https://github.com/DaleyChao/SecondKill/archive/master.zip一、项目概述
一、为什么使用SSM框架
1.互联网公司常用框架
2.框架易于使用和轻量级
3.低代码倾入性
4.成熟的社区和用户群
二、相关技术
MySQL：1.表设计2.SQL技巧3.事务和行级锁
MyBatis：1.DAO层的设计和开发2.MyBatis合理使用3.MyBatis和Spring的整合和使用
Spring：1.Spring IOC整合Service2.声明式事务
SpringMVC:1.Restful接口设计和使用技巧2.框架运作流程3.Controller开发技巧
前端：1.交互设计2.Bootstrap3.JQuery
高并发：1.高并发点和高并发分析2.优化思路并实现
三、项目效果
二、建立项目
一、使用Maven建立项目
1.使用maven建立项目：
mvn archetype:generate -DgroupId=org.seckill -DartifactId=seckill -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false -DarchetypeCatalog=internal
也可以使用mvn archetype:generate命令根据提示建立项目。
2.使用Eclipse导入项目
3.修改web.xml文件schema，使用servlet4.0版本，默认2.3版本EL表达式不工作。
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1" metadata-complete="true"> <!--修改servlet版本为3.1 --> </web-app>4.补全目录
5.补全pom.xml，导入相关依赖
二、相关依赖
部分说明：
1.Java日志：slf4j，log4j，logback，common-logging等等（commons-logging 和 slf4j 都是日志规范/接口，区别是slf4j在加载时寻找接口的实现，而 commons-logging 在运行时寻找接口的实现）
slf4j是规范/接口，log4j，logback，common-logging是日志实现
这里使用slf4j+logback
2.c3p0数据库连接池
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.seckill</groupId> <artifactId>seckill</artifactId> <packaging>war</packaging> <version>1.0.0SNAPSHOT</version> <name>seckill Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <!-- https://mvnrepository.com/artifact/junit/junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!-- 日志 --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.12</version> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> <version>1.1.1</version> </dependency> <!-- 实现slf4j接口并整合 --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.1.1</version> </dependency> <!-- 数据库相关的依赖 --> <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.40</version> <scope>runtime</scope> </dependency> <!-- 数据库链接池 --> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> </dependency> <!-- Dao层 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.1</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <!-- Servlet web 相关依赖 --> <!-- https://mvnrepository.com/artifact/taglibs/standard --> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>1.1.2</version> </dependency> <!-- https://mvnrepository.com/artifact/jstl/jstl --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.8.5</version> </dependency> <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.8.5</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.0-b01</version> <scope>provided</scope> </dependency> <!-- Spring --> <!-- https://mvnrepository.com/artifact/org.springframework/spring-core --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-context --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-web --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-test --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.3.4.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/redis.clients/jedis --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.8.1</version> </dependency> <!-- protostuff序列化依赖 --> <!-- https://mvnrepository.com/artifact/io.protostuff/protostuff-core --> <dependency> <groupId>io.protostuff</groupId> <artifactId>protostuff-core</artifactId> <version>1.5.2</version> </dependency> <!-- https://mvnrepository.com/artifact/io.protostuff/protostuff-runtime --> <dependency> <groupId>io.protostuff</groupId> <artifactId>protostuff-runtime</artifactId> <version>1.5.2</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-collections/commons-collections --> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.2</version> </dependency> </dependencies> <build> <finalName>seckill</finalName> </build> </project>
MySQL等关系型数据库提供的事务机制是目前可靠的数据落地方案
三、秒杀功能
1.秒杀接口暴露
2.执行秒杀
3.相关的查询
四、项目阶段
一、DAO层设计和编码
1.数据库表设计 2.DAO的接口 3.MyBatis实现DAO
二、Service设计编码
1.Service层设计以及编码实现 2.通过Spring管理Service，通过声明式事务标注事务操作（通过Spring声明式事务简化事务控制）
三、web设计
1.RESTful接口设计 2.前端交互
四、优化项目
三、详细设计
一、数据库设计
--数据库初始化脚本
CREATE DATABASE seckill;
--使用数据库
use seckill;
--创建秒杀库存表
CREATE TABLE seckill1(
`seckill_id` bigint NOT NULL AUTO_INCREMENT COMMENT '商品库存id',
`name` varchar(120) NOT NULL COMMENT '商品名称',
`number` int NOT NULL COMMENT '库存数量',
`start_time` timestamp NOT NULL COMMENT '秒杀开启时间',
`end_time` timestamp NOT NULL COMMENT '秒杀结束时间',
`create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
PRIMARY KEY (seckill_id),
KEY idx_start_time(start_time),
KEY idx_end_time(end_time),
KEY idx_create_time(create_time)
)ENGINE=InnoDB AUTO_INCREMENT=1000 DEFAULT CHARSET=utf8 COMMENT="秒杀库存表";
--初始化数据
insert into seckill(name,number,start_time,end_time) values
('1000元秒杀iphone6s',100,'2016-12-19 00:00:00','2016-12-20 00:00:00'),
('100元秒杀iphone6',200,'2016-12-19 00:00:00','2016-12-20 00:00:00'),
('200元秒杀iphone5',300,'2016-12-19 00:00:00','2016-12-20 00:00:00'),
('10元秒杀iphone4',400,'2016-12-19 00:00:00','2016-12-20 00:00:00');
--秒杀成功明细表
--用户登录认证相关的信息
CREATE TABLE success_kill(
`seckill_id` bigint NOT NULL COMMENT '秒杀商品id',
`user_phone` bigint NOT NULL COMMENT '用户手机号',
`state` tinyint NOT NULL DEFAULT -1 COMMENT '创建标识：-1 无效 0 成功 1：已付款 2：已发货',
`create_time` timestamp NOT NULL COMMENT '创建时间',
PRIMARY KEY (seckill_id,user_phone),
KEY idx_create_time(create_time)
)ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT="秒杀成功明细表";
--连接数据库控制台
mysql -uroot -p
未完……
